Potential fix for code scanning alert no. 168: Statement has no effect

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: coretl

src/ophyd_async/core/_protocol.py

@@ -101,7 +101,7 @@ class AsyncMovable(Protocol):
     @abstractmethod
     def set(self, value) -> AsyncStatus:
         """Return a ``Status`` that is marked done when the device is done moving."""
-        ...
+
 
 
 C = TypeVar("C", contravariant=True)